The System Manual of SOL-20 - History of Computers

PROCESSOR TECHISIOLOGY CORPORATION
Sol-PC SINGLE BOARD TERMINAL COMPUTER TM
SECTION III
LOCATION VALUE (ufd) TYPE ORIENTATION
( ) C10 .047 Disc None
( ) C11 .047 “ “
( ) C13 .047 “ “
( ) C14 .047 “ “
( ) C15 15 Tantalum “+” lead bottom
( ) C16 .047 Disc None
( ) Step 3. Check for +5-volt bus to ground shorts. Using an
ohmmeter, measure between positive and negative mounting
pads for C58. There should be no continuity. If there is,
find and correct the problem before proceeding to Step 4.
( ) Step 4. Install the following capacitors in the indicated
locations. Take care to observe the proper value1 type and
orientation, if applicable, for each installation. Bend
leads outward on solder (back) side of board, solder and
trim. (refer to NOTE in Step 2.)
LOCATION VALUE (ufd) TYPE ORIENTATION
( ) C19 .047 Disc None
( ) C20 .047 “ “
( ) C21 .047 “ “
( ) C24 .047 “ “
( ) C25 .047 “ “
( ) C26 .047 “ “
( ) C33 .047 “ “
( ) C38 .047 “ “
( ) C40 15 Tantalum +” lead bottom
( ) C41 .047 Disc None
( ) C42 .047 “ “
( ) C45 .047 “ “
( ) C56 .047 “ “
( ) C58 15 Tantalum “+” lead top
( ) C59 15 Tantalum “+” lead top
( ) C60 15 Tantalum “+” lead top
( ) C65 .047 Disc None
( ) Step 5. Check for +5-volt bus to ground shorts. Using an
ohmmeter, measure between the positive and negative leads of
C58. You should measure at least 100 ohms. Less than 100
ohms indicates a short. If required, find and correct the
problem before proceeding to Step 6. NOTE: In this and
subsequent resistance measurements, any value greater than
the minimum may normally occur, even much higher, unless
otherwise indicated.
( ) Step 6. Install the following capacitors in the indicated
locations. Take care to observe the proper value and type
for each installation. Bend leads outward on solder (back)
side of board, solder and trim. (Refer to NOTE in Step 2.)
(Step 6 continued on Page 111—12.)
Rev A 111—11